Deleting users

Hi,
We're running BlogEngine.NET 1.3.0.0 and having a problem when trying to delete a user. We get the following error message:

The array parameter 'roleNames' should not be empty.
Parameter name: roleNames
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

I am seeing a similar issue when trying to delete users with 1.4 w/ SQL Server:Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Configuration.Provider.ProviderException: The user 'test' was not found.